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Add batchLimit option #35

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Add batchLimit option #35

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6 changes: 6 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -210,6 +210,12 @@ window.HAML['templates/example']

*Defined only `placement == 'global'`.*

#### batchLimit
Type: ```number```
Default: ```20```

The maximum number of asynchronous transpiling processes simultaneously running at any time.

### Usage examples

``` javascript
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1 change: 1 addition & 0 deletions package.json
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Expand Up @@ -27,6 +27,7 @@
"node": "0.10.x"
},
"dependencies": {
"async": "^0.9.0",
"haml": "0.4.x",
"haml-coffee": "1.14.x"
},
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9 changes: 6 additions & 3 deletions tasks/haml.js
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Expand Up @@ -9,7 +9,7 @@ module.exports = function(grunt) {
'use strict';

var path = require('path');
var async = grunt.util.async;
var async = require('async');
var _ = grunt.util._;

grunt.registerMultiTask('haml', 'Compile Haml files', function() {
Expand Down Expand Up @@ -41,7 +41,10 @@ module.exports = function(grunt) {

// Precompile templates; if false (and target == 'js'), place rendered
// HTML in js variables.
precompile: true
precompile: true,

// The maximum number of asynchronous transpiling processes simultaneously running at any time
batchLimit: 20

});

Expand All @@ -52,7 +55,7 @@ module.exports = function(grunt) {
grunt.verbose.writeflags(options, 'Options');

// Transpile each src/dest group of files.
async.forEach(this.files, function(file, callback) {
async.eachLimit(this.files, options.batchLimit, function(file, callback) {
var opts;
// Get only files that are actually there.
var validFiles = file.src.filter(function(filepath) {
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